Technichal Manual Heating Actuators AKH
MDT technologies GmbH •
51766 Engelskirchen
• Papiermühle 1
Tel.: +49-2263-
880 • Fax: +49
-2263-4588
• [email protected] • www.mdt.de
33
4.4.3 Flow temperature limit
For avoiding fluctuations at the control circuit, an additional flow temperature limit can be activated:
Figure 21: Flow temperature limit
The dynamic range of the flow temperature limit is shown at the following chart:
Sub function
Dynamic range
[default value]
comment
Flow temperature limit
inactive
active
Activation/deactivation of a flow
temperature limit
Flow temperature limit at
heating
inactive, 25°C, 26°C,
°C, …, °C
[38°C]
Adjustment of the maximum flow
temperature at heating
Flow temperature limit at
cooling
inactive, 15°C, 16°C,
°C, …, °C
[18°C]
Adjustment of the minimum flow
temperature at cooling
Table 33: Flow temperature limit
The flow temperature limit restricts the actual flow temperature. This allows you, to limit the heating
temperature, which is needed in some situations. If for example an underfloor heating must not heat
above a certain value to protect the flooring, the heating temperature can be limited by the flow
temperature limit. The flow temperature limit needs a second sensor at the flow. This sensor
measures the actual flow tempearure. The object, which contains the temperature value, must be
connected to the object for the flow temperature of the heating actuator. This one limits the flow
temperature now, according to the adjusted parameters.
Number
Name
Length
Usage
1
Flow temperature
2 Byte
Processing of the measured flow temperature
Table 34: Communication object flow temperature
